| 摘要 | 第1-9页 |
| Abstract | 第9-11页 |
| Nomenclature | 第11-13页 |
| Chapter One Introduction | 第13-33页 |
| Chapter Two Numerical simulation of temperature without the fluid | 第33-110页 |
| ·Introduction | 第33-34页 |
| ·The basic theory | 第34-42页 |
| ·The equation of heat conduction | 第34-37页 |
| ·The boundary conditions for three-dimensions | 第37-40页 |
| ·The boundary conditions for two-dimensions | 第40-42页 |
| ·The examples of the numerical calculation | 第42-71页 |
| ·The temperature distributions at the upper surface of workpiece | 第44-54页 |
| ·The maximum temperature and the heat affected depth | 第54-62页 |
| ·The isotherms on the upper surface of workpiece for diverse conditions | 第62-71页 |
| ·The influnence of thermal diffusivity of material on the temperature field | 第71-77页 |
| ·The numerical calculation of temperature field for the case of thin plate | 第77-80页 |
| ·The comparison of steady temperature field between the theoretical results and experimental data | 第80-86页 |
| ·The numerical calculation of transient three-dimensional temperature field | 第86-108页 |
| ·The basic theory | 第86-88页 |
| ·The transient temperature field of workpiece with a sharp board | 第88-99页 |
| ·The transient temperature field of workpiece treated by the pulse laser | 第99-108页 |
| ·Inclusions | 第108-110页 |
| Chapter Three The mathematical modelling of laser remelting process | 第110-135页 |
| ·Introduction | 第110-112页 |
| ·The equations governing the state of laser pool | 第112-119页 |
| ·The continuous and momentum equations of flow | 第112-114页 |
| ·The energy equation in the chosen domain | 第114-116页 |
| ·The boundary conditions | 第116-118页 |
| ·The governing equations in the non-dimensional forms | 第118-119页 |
| ·Some Remarks | 第119-122页 |
| ·The latent heat of fusion | 第119-120页 |
| ·Reynolds number and the laminar assumption | 第120-121页 |
| ·The thermo-physical properties | 第121-122页 |
| ·The two-dimension temperature field without the effects of flow | 第122-128页 |
| ·The processing of numerical calculation including the flow field | 第128-135页 |
| ·Treatment of solid region in the calculation of flow field | 第128-129页 |
| ·The penalty finite element method | 第129-131页 |
| ·The numerically solving scheme | 第131页 |
| ·Example and Conclusions | 第131-135页 |
| Chapter Four The laser-powder interaction in the laser cladding | 第135-173页 |
| ·Introduction | 第135-136页 |
| ·Velocity distribution of powder particles in laser Cladding | 第136-144页 |
| ·The theoretical model | 第137-143页 |
| ·Conclusion | 第143-144页 |
| ·The interactions between laser and powder particles in the laser cladding | 第144-158页 |
| ·Temperature distribution of the powder particles | 第146-154页 |
| ·Attenuation of laser power caused by powder particles | 第154-158页 |
| ·Conclusions | 第158页 |
| ·The theoretical model of the laser cladding | 第158-173页 |
| ·Introduction | 第158-160页 |
| ·Melting of powder particles | 第160-162页 |
| ·The driving forces of flow in laser pool | 第162页 |
| ·The calculated domain | 第162-165页 |
| ·The boundary conditions | 第165-169页 |
| ·The main numerical conclusions of the reference | 第169-172页 |
| ·Conclusions | 第172-173页 |
| Summary | 第173-174页 |
| Acknowledgements | 第174-176页 |
| References | 第176-183页 |
| Appendix A | 第183-184页 |
| Appendix B | 第184-185页 |
| Appendix C | 第185-188页 |
| Published Papers | 第188页 |
